1366 - Incorrect integer value: '' for column `mapshopatlogis`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'a176f2db48e9e735048eb183d2014a9a', '216.73.216.3', '1767313024', '1767313024', '/product_info.php?info=p3181_Neuseeland-2-Reliefkarte.html')

[XT SQL Error]